Hot-water boiler



Patented ct. 23, 1923.

ritrae raras harem erica.

FRANK ENGELHARD, FREDERICK E. NGl'lLHAD, AND VTILLIML A. EhlG-ELHARD, OF

SPRINGFIELD, MASSACHUSETTS; SAD FREDERICK H. ENGELHARD .AND 'SAID 1NIL- LAM A. ENGELHARD EXECUTRS F SAD FRANK ENGELHARD, DECEASED. i

nerr-wanna Beinen.

Application filed.A November "i5, 1921. Serial No. 515,199.

Our invention relates to improvements inhot-water boilers or tanks which are designed to be connected with kitchen ranges or gas heaters for the purpose of heating water to be distributed to different parts ot'y the house, and resides in certain peculiar features of construction, and in a special top connection oi' fitting, all as hereinafter set forth.

One object of our invention is to produce a boiler or tank, of the character described above, which possesses degrees of strength and durability that materially prolong the life of the tank and enhance the value thereof. rlhe weakest portions'o an ordinary tank are the joints near the top and bottom thereof, where there is great liability of the seams opening and the tank becoming useless, and where repairs are most frequently needed, although such repairs as a rule only prolong the life of the tank a comparatively short time. In our tank the seams or joints at the top and bottom are so formed or constructed as to render these portions of the tank even stronger and more durable than the other portions' thereof.

Another object is to provide the tank with an adjustable coupling or fitting at the top, whereby is removed most of the diliiculty heretofore experienced in connecting the' outlet or distribution pipes with the tank.

Other objects and advantages will appear in the course of the following description.

7e attain the objects and secure the advantages of our invention by the means illustrated in the accompanying drawings, in whichl Figure 1 is a side elevation of a tank which embodies a practical 'torni of our invention; Fig. 2, an enlarged, top plan ot one of the two upper joint-forming rings; Fig. 3, an enlarged, top planet` the end unit at the bottom of the tank; Fig. 4t, an enlarged, horizontal section through the top littiiig,

taken on lines-i, looking in the direction i of the associated arrow, in Fig. 5; Fig. 5, an enlarged, central, i through said tank, portions of the same being broken away, and, 6, a sectional detail of a portion of the upper joint, on a greatly enlarged scale i i other views.

Figure 2 would also serve as a bottom plan et the corresponding ring in the lower joint; y

Fig. 3 would serve equally well as a bottom plan of the end unit at the top of the tank, except that the nipples in the two units are somewhat different, and Fig. 6, if inverted, would then become a detail of a portion of the lower joint.

Similar. reference characters designate similar parts throughout the several views. This tank comprises a hollow cylindrical body l, and top and bottom, end units which latter will presently be described The body 1ly is provided in one side with a nipple 2, and the end unit at the bottom is provided in the center with a nipple 3, as is customary. A pipe, as 40, is connected with the nipple 3 and leads to the water-back in a stove or to a gas heater (not shown), and

a 'return pipe from said water-back or heater, as 5, is connected with the nipple 2, all in the usual and well-known manner.

The end unit at the top of the tank is provided in the center` with a nipple 6.' This nipple is externally screw-threaded to receive a nut 7 by means of which a connectionV or fitting 8 is attached to said nipple.r

Securely riveted on Jhe inside of the body l, some little distance in from the endsof said body, are reenforcing, joint-forming rings 9-9 of comparatively heavy or substantial construction. C'ne of the rivets by means of which the rings 9 are secured to the v body 1 is clearly shown in full at 10 in Fig. 6. Projecting inwardly from each ring 9 is a plurality ot arcuate lips or flanges 11, there being three in the present case. The ianges l1 extend inwardly from the bottom oit' the upper ring 9 and from the top of the lower ring 9. The inner edges of the anges 1l are concentric with the ringsv 9. The flanges on each ring are equi-distant apart.

The end unit at the top of the tank comprises a plate l2, iii the form of a spherical segment, which has a downwardly-extendvertical section 4 as compared withthe y the plate 12 is a plurality of lugs 17, which lugs are equi-distant apart, and correspond in number with the flanges 11 on cach ring 9. Each lug 17 has at the upper terminal thereof on the outer side a pair of ears 18, and these ears are riveted, as at 19, against the inner tace of the vertical part 13. The rivets 19 extend through the ears 18, the part 13, and the ring 15. At the bottom of each lug 17 is an outwidly-turned lip 20, The lips 20 are designed to engage the under sides of' the flanges 11 on the upper ring 9 when the parts are assembled, the proportions and positions of said lugs being such as to enable the aforesaid engagement to be made, vas will hereinafter be more fully explained.

'The end unit at the bottom of the tank is exactly like the end unit at the top of the same, which has just been described, except that the parts and members are inverted. In Fig.v 3 a portionof the ring` 15 therein appearing is broken out to disclose in full the two rivets 19 which hold one of the lugs 17, with which this unit is provided, in place.

Preferably the top of the upper and the bottom of the lower rings 15 converge from the outside peripheries to the inside peripheries, as indicated by the numeral 21. The body 1 extends over the outer ends of the flanges 14l and the outer periph-aries of the rings 15 and beyond, the latter, and such projecting, upper and lower edge portions of said body are turned inwardly over and onto the inclined surfaces 21 of the rings 15, as shown at 22.

Covering the joints between the body 1 and the end units are two exterior bands 23. Each band 23 extends onto the contiguous plate 12 and the upper portion of the body 1. These bands are securely held in place by means of' soft solder which is poured in between contiguous portions of the plates 12, the body 1, and the. bands. The solder also fills the annular spaces between the overturned edOes or rims 22 of the body 1, the vertical portions 13 of the plates 12, and

'the inclined portions of the bands 23, thus adding another element of strength and se-V curity to the joints.

Tn assembling the elements which constitute the tank proper, the end units are introduced into the open ends of the body 1, before the edges which form the rims 22 are bent inwardly, until the flanges 14: of said units come into contact with the rings 9. 'In order to do this' it is necessary that the end units be so positioned that the lugs 17 do not encounter the flanges 11. After the end units have been inserted in the foregoing manner, they are partially rotated to cause the lugs 17 to engage with their lips 20 the inner sides of the flanges 11. `With the lugs 17 in engagement with the flanges 11 it is, of course, practically impossible to remove or separate the end units or either of' them from the body 1. Next the edges of thebody l are bent inwardly to form the rims 22. Then the bands 23 are placed in position. And finally the solder is introduced in and around the joint-forming members just united, to complete the joints.

From the foregoing it is plainly seen that the parts and members, by means of' which the ends are secured to the body of the tank, are so tightly, securely, and rigidly united as to produce joints that possess the desired and required strength, durability, and security, whereby are eliminated all danger or liability of rupture or leakage at suc-h joints.

The fitting 8 is provided with a vertical passage 24, and with two horizontal 'pas-.

sages 25, all of which extend clear through the fitting. Tn the passage 24, above. the intersection therewith of the passages 25y is a flange 26, and this flange supports a pipe 27, there being an external Hange 28 on said pipe at the top thereof to rest on said internal flange. The pipe 27 extends downwardly through the fitting 8 and the nipple 6 into and nearly to the bottom of the tank. A pipe, as 29, is connected with the fitting 8 above the pipe 27, and supplies cold water to the tank through said last-named pipe. A relief valve (not shown) may be con nected with the fitting 26 at one end of one of the passages 25, and pipes, as 30, may be connected with one or more of the other outlets of' said connection, which outlets are at the ends of said passages. These pipes are the conduits through which; the hot water from the boiler is distributed to different parts of the house. Two of the pipes 30 are represented in Fig. 1, and there is also represented in that view a plug 31, and similar plugs by means of which may be closed any outlet or outlets of the fitting 8 which may not be needed.

There is an external fiange 32 at the bottom of the fitting 8, and a packing-ring 33 is .interposed between the top of the nipple 6 and said flange. The nut 7 has an internal flange to engage the flange 32 and force. the same tightly onto the packing-ring 33, when said nut is screwed down on the nipple 6.

Upon loosening the nut 7, the fitting 8 may be rotated to position said fitting to accommodate the pipes 30 however they may be disposed horizontally. After proper adjustment has been made the nut 7 is again sible because the pipev 27 issmaller in diameter than the passage in which itis located below the supporting flange 26.

ln order to connect the internally-langed nut 7 with the base of t-he iitting 8 'above the iange 32, it is necessary to make said fitting in two parts and to unite such parts after said nut has been connected. rlhe parts of the fitting 8 which originally are separate from each other are securely and permanently joined together by means of a tight r drive lit, soldering, or brazing, or in any f other usual manner.

This tank including` its ittings is employed in substantially the saine manner as any other tank for a similar purpose.

At 34 is represented the solder by means of which the nipples 6, 2, and 3 are held in place and tight joints around them insured, and about which there is nothing unusual; while the solder employed at, in, and around the joints between the body l and the top and bottom of the tank is indicated at 35.

More or less change in the shape, size, construction, and arrangement of some or all of the parts of the tank may be made without departing from the spirit of our inention or exceeding vthe scope of what `is claimed.

lllhat we claim as our invention, and Vdesire to secure by Letters Patent, is-

l. As an improved article of manufacture, a hot-water boiler comprising a body having interior rings aiiixed thereto, and end units having exterior rings which aro ailixed thereto and receivable in said body in contiguity with said body rings, and secured to the latter, said end-unit rings being out of contact with said body rings.

2. As an improved article of manufacture, a hot-water boiler comprising a body having interior rings alixed thereto, end units consisting in part of exterior rings affixed thereto and receivable in said body and into contiguity with said body rings'but without contacting therewith, and interlocking fastening means between said units and said body rings.

3. As an improved article of manufacture, a hot-water boiler comprising a body having interior rings aiixed thereto, adjacent to the ends thereof, end units consisting in part of rings affixed thereto and .re-

ends thereof, end units consisting of plates havingl approximately vertical and routwardly-extending edge portions, andv of article of manui'acrings set into the v'angles formedby said edge portions,l saidlast-named rings and said edge portions being receivable in said body inV contiguity with said iirstfnamed rings, and means to secure said end units to said body rings.

5. As an improved article Omanufacture, a hot-water boiler comprising a body provided with interior rings adjacent tothe ends thereof, end units consisting' ot plates having 'approximately' vertical and v outwardly-extending edge portions, `and of rings set in the angles formed by said edge portions, said last-namedV rings and said edge portions being receivable in said body in contiguity withsaid body rings, and the edge portions of said body being bent over said end-unit rings, and means to secure said end units to said body rings.

6. As an improved article of manufacture` a hot-water boiler comprising a body provided with interior rings adjacent to the ends thereof, and end units consisting oi plates having approximatelyA vertical and outwardly-extending edge portions, and ot rings set into the angles formed by said edge portions, said last-named rings having outer sides that converge from the outer to the inner peripheries thereof, and with saidl edge portions being receivable in said body in contiguity with said body rings, the edge portions of said body being bent over onto said converging sides. j

7. As an improved article of manufacture, a hot-water boiler comprising a body provided with interior rings adjacent to the ends of said body, and end units consisting of plates and attached exterior `rings iitting withinl said body outside of sai'd first-named rings, the latter andsaid end units having interengaging fastening members.

8. rl'he combination, in a hot-water boiler, with a body provided with interior rings which have interior flanges, said rings being adjacent to the ends of said body, of end units consisting of plates and attached exterior rings, and having lugs to engage said flanges, the end portions or said body being turned over onto said last-named rings.

9. As an improved article of manufacture, a hot-water boiler comprising a body provided with interior rings adjacent to the ends thereof, end units consisting et plates having approximately vertical and outwardly -extendingedge portions, and of rings set in the angle formed by said edge portions, said end-unit and said edge portions being receivable in said body in contignitywith said body rings, and tbe edge portions of said body being bent overV the end-unit rings, fastening ineans between said body rings and said units, and bands around the outside of tl joints at the ends of said body.

i0. s an improved article oi manufacture, a bot-water boiler comprising a body provided with interior rings adjacent to the ends tliereoii, end units consisting ot plates having approximately vertical and outwardly-extendingedge portions, and ot rings set ln the angles :torined by said edge portions, said end-unit rings and said edge portions being receivable in said body in contignity with said body rings, and the edge portions or' said body being bent over the end-unit rings, and bands .soldered over tbe joints at the ends ot said body.

ll. As an improved article et manufacture, a hot-water boiler comprising a body provided with interior rings riveted thereto adjacent to the ends thereof, end units consisting ot plates having approximately vertical and outwardly-extending edge portions, and ot' rings set in the angles torined ty said edge portions and riveted to the appr @mately-vertical parts thereof, said end-unit rings and said edge portions being receivable in said body in contignity with said body rings, and the edge portions ot said body being bent over tbe unit rings, and 'fastening ineans between said body rings and said end units.

' l2. The combination, in a hot-water boiler, with a tank provided on top with a nipple, of a fitting having vertical and liorizontal passages therethrough, and provided with an internal flange above said horizontal passages, rneans to secure said litting to said nipple and to permit the oriner to be adjusted on the latter and a. pipe hav-- ing a iiange to rest on said first-named flane, said pi 3e extending downwardly into said tank.

i3. The hot-water combination, in a Yvertical and horizontalr passages through, and an interior `lange abovethe boiler, with a tank provided at the top with a nipple, of a iitting having a flanged base,

therehorizontal passages, a ilanged nut to engage said iianged base and adapted to be screwed onto aid nipple, a packing-ring between said nipple and said base, and a pipe havingA a flange to rest on the flange in said i'itting, said pipe extending downwardly into said tank.

le. The combination, in a hot-water boiler, or a body, interior rings riveted to said body soinewbat reinste frein the ends thereof, said rings having interior flanges, end units co sisting of plates having approximately vertical and ontwardly-eitending edge portions, rings set in the angles iforlied by said edge portions and riveted to tbe approXiinately-vertical parts oii said plates, second-named rings and said edge portions oia said plates being receivable in said body in contio'iiity to said irstnanied rings, and lugs 'carried by said approi-:iinately-vertical parts and said secondnained rings, and adapted to engage said flanges, the edge portions et said body being bentI over said second-named rings.

l5. The combination, in a hot-water boiler, ot a body, interior rings riveted to said body somewhat remote trein the ends thereof, said rings having interior iianges, end units consisting ot plates liaving approximately vertical and outwardiy-extending edge portions, rings set in the angles torined by said edge portions and riveted to tbe approxiinately-vertical parts ot' said plates, said second-named rings and said edge portions ot said plates being receivable in said body in contignity to said firstnained rings, lugs carried by said approximately-vertical parts and said secondnamed rings, and adapted to engage said flanges, the edge portions ot' said body being bent over said second-named rings, and bands soldered to said body and plates over the joints between the same.

llltElll-lll H. ENGELHARD VVlLLli-l d A. ENGELHARD. FRANK ENGELHARD. Witnesses ALFRED C. FAinnANns. FRANCES l. Tann. 

